Original Coifs

My attempts to locate surviving forehead cloths (for shape and dimension details) met some success--and a good number of coifs. All appear to be the 'single piece' construction, and many have delightful embroidery.

Venetian cap/coif, first quarter of the 16th century. From The Met.

Late 16th century British coif, from the Met.

Another embroidered coif, last quarter 16th century, from The Met

Coif, c.1600, laid out flat. MFA Boston 

Polychrome coif, English, late 16th-early 17th century.
MFA Boston

Two blackwork coifs, British, c.1575-1599. VAM.

Detail of coif, 1575-1599. VAM

British coif, c.1600-1625. VAM.

Coif, 1590-1610. VAM.

Forehead Cloths:

Coif and Forehead Cloth, c.1610-1615. MFA Boston.

Coif and Forehead Cloth, British, 1620-1640. VAM.

Triangular forehead cloth, embroidered, last quarter 16th century, in The Met.

Another forehead cloth, last quarter 16th century, from The Met.